Patents by Inventor Hans-Jurgen Brautigam

Hans-Jurgen Brautigam has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Process for biological treatment of dissolved nitrates
    Patent number: 5124039
    Abstract: This invention relates to a process for biologically converting dissolved nitrates into nitrogen, for instance for the denitrification of waste waters by microorganisms with the use of a liquified gas such as C.sub.3 - and/or C.sub.4 -hydrocarbon compounds. Said liquified gas is dissolved in the water which is to be denitrified.
    Type: Grant
    Filed: April 25, 1990
    Date of Patent: June 23, 1992
    Assignee: Degremont
    Inventor: Hans-Jurgen Brautigam